Perhaps you should try some spelling variations:
oral communication » personal communication
information costs » information contents, information centers, information content
technologien am » technologien im, technologien als, technologie im
am information » guam information, palm information, crm information
a developing » a development
developing 2 » developing _, developing a, developing e
costs 2.1 » costs 2.3, costs 4.1, costs 2.2
2.1 oral » 2.1 vorab, 6.11 oral, 2 oral
2 access » 3 access
costs a » costs _, costs 4

You may be able to get more results by adjusting your search query.

• Adding a wildcard symbol may retrieve word variants: technologien am information costs 2.1 oral communication costs a developing 2 access.*.